What disease did Dolly, the first successfully cloned animal, die from?

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Skin disease

Blood cancer

Lung disease

Breast cancer

answer is A.

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Detailed Solution

Dolly, the first successfully cloned animal, died at the age of 6.5 years due to a type of lung cancer called ovine pulmonary adenocarcinoma.

The cancer was caused by a retrovirus called Jaagsiekte sheep retrovirus (JSRV), which is common in domestic sheep.

Despite being a healthy clone and giving birth to several offspring, Dolly's health deteriorated later in life, and she developed this fatal lung disease.

Her death raised questions about the health risks associated with cloning and the potential impact of cloning on the welfare of animals.

Nonetheless, Dolly's birth remains a significant achievement in the field of genetics and reproductive biology, paving the way for further research and innovation.

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